Modelling the coupled mercury-halogen-ozone cycle in the central Arctic during spring
Near-surface mercury and ozone depletion events occur in the lowest part of the atmosphere during Arctic spring. Mercury depletion is the first step in a process that transforms long-lived elemental mercury to more reactive forms within the Arctic that are deposited to the cryosphere, ocean, and oth...
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Language: | English |
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University of California Press
2023
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Online Access: | http://dx.doi.org/10.1525/elementa.2022.00129 https://online.ucpress.edu/elementa/article-pdf/doi/10.1525/elementa.2022.00129/778171/elementa.2022.00129.pdf |
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crunicaliforniap:10.1525/elementa.2022.00129 2023-12-10T09:44:28+01:00 Modelling the coupled mercury-halogen-ozone cycle in the central Arctic during spring Ahmed, Shaddy Thomas, Jennie L. Angot, Hélène Dommergue, Aurélien Archer, Stephen D. Bariteau, Ludovic Beck, Ivo Benavent, Nuria Blechschmidt, Anne-Marlene Blomquist, Byron Boyer, Matthew Christensen, Jesper H. Dahlke, Sandro Dastoor, Ashu Helmig, Detlev Howard, Dean Jacobi, Hans-Werner Jokinen, Tuija Lapere, Rémy Laurila, Tiia Quéléver, Lauriane L. J. Richter, Andreas Ryjkov, Andrei Mahajan, Anoop S. Marelle, Louis Pfaffhuber, Katrine Aspmo Posman, Kevin Rinke, Annette Saiz-Lopez, Alfonso Schmale, Julia Skov, Henrik Steffen, Alexandra Stupple, Geoff Stutz, Jochen Travnikov, Oleg Zilker, Bianca 2023 http://dx.doi.org/10.1525/elementa.2022.00129 https://online.ucpress.edu/elementa/article-pdf/doi/10.1525/elementa.2022.00129/778171/elementa.2022.00129.pdf en eng University of California Press http://creativecommons.org/licenses/by/4.0/ Elem Sci Anth volume 11, issue 1 ISSN 2325-1026 Atmospheric Science Geology Geotechnical Engineering and Engineering Geology Ecology Environmental Engineering Oceanography journal-article 2023 crunicaliforniap https://doi.org/10.1525/elementa.2022.00129 2023-11-16T18:34:13Z Near-surface mercury and ozone depletion events occur in the lowest part of the atmosphere during Arctic spring. Mercury depletion is the first step in a process that transforms long-lived elemental mercury to more reactive forms within the Arctic that are deposited to the cryosphere, ocean, and other surfaces, which can ultimately get integrated into the Arctic food web. Depletion of both mercury and ozone occur due to the presence of reactive halogen radicals that are released from snow, ice, and aerosols. In this work, we added a detailed description of the Arctic atmospheric mercury cycle to our recently published version of the Weather Research and Forecasting model coupled with Chemistry (WRF-Chem 4.3.3) that includes Arctic bromine and chlorine chemistry and activation/recycling on snow and aerosols. The major advantage of our modelling approach is the online calculation of bromine concentrations and emission/recycling that is required to simulate the hourly and daily variability of Arctic mercury depletion. We used this model to study coupling between reactive cycling of mercury, ozone, and bromine during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) spring season in 2020 and evaluated results compared to land-based, ship-based, and remote sensing observations. The model predicts that elemental mercury oxidation is driven largely by bromine chemistry and that particulate mercury is the major form of oxidized mercury. The model predicts that the majority (74%) of oxidized mercury deposited to land-based snow is re-emitted to the atmosphere as gaseous elemental mercury, while a minor fraction (4%) of oxidized mercury that is deposited to sea ice is re-emitted during spring. Our work demonstrates that hourly differences in bromine/ozone chemistry in the atmosphere must be considered to capture the springtime Arctic mercury cycle, including its integration into the cryosphere and ocean. Article in Journal/Newspaper Arctic Sea ice University of California Press (via Crossref) Arctic Elem Sci Anth 11 1 |
institution |
Open Polar |
collection |
University of California Press (via Crossref) |
op_collection_id |
crunicaliforniap |
language |
English |
topic |
Atmospheric Science Geology Geotechnical Engineering and Engineering Geology Ecology Environmental Engineering Oceanography |
spellingShingle |
Atmospheric Science Geology Geotechnical Engineering and Engineering Geology Ecology Environmental Engineering Oceanography Ahmed, Shaddy Thomas, Jennie L. Angot, Hélène Dommergue, Aurélien Archer, Stephen D. Bariteau, Ludovic Beck, Ivo Benavent, Nuria Blechschmidt, Anne-Marlene Blomquist, Byron Boyer, Matthew Christensen, Jesper H. Dahlke, Sandro Dastoor, Ashu Helmig, Detlev Howard, Dean Jacobi, Hans-Werner Jokinen, Tuija Lapere, Rémy Laurila, Tiia Quéléver, Lauriane L. J. Richter, Andreas Ryjkov, Andrei Mahajan, Anoop S. Marelle, Louis Pfaffhuber, Katrine Aspmo Posman, Kevin Rinke, Annette Saiz-Lopez, Alfonso Schmale, Julia Skov, Henrik Steffen, Alexandra Stupple, Geoff Stutz, Jochen Travnikov, Oleg Zilker, Bianca Modelling the coupled mercury-halogen-ozone cycle in the central Arctic during spring |
topic_facet |
Atmospheric Science Geology Geotechnical Engineering and Engineering Geology Ecology Environmental Engineering Oceanography |
description |
Near-surface mercury and ozone depletion events occur in the lowest part of the atmosphere during Arctic spring. Mercury depletion is the first step in a process that transforms long-lived elemental mercury to more reactive forms within the Arctic that are deposited to the cryosphere, ocean, and other surfaces, which can ultimately get integrated into the Arctic food web. Depletion of both mercury and ozone occur due to the presence of reactive halogen radicals that are released from snow, ice, and aerosols. In this work, we added a detailed description of the Arctic atmospheric mercury cycle to our recently published version of the Weather Research and Forecasting model coupled with Chemistry (WRF-Chem 4.3.3) that includes Arctic bromine and chlorine chemistry and activation/recycling on snow and aerosols. The major advantage of our modelling approach is the online calculation of bromine concentrations and emission/recycling that is required to simulate the hourly and daily variability of Arctic mercury depletion. We used this model to study coupling between reactive cycling of mercury, ozone, and bromine during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) spring season in 2020 and evaluated results compared to land-based, ship-based, and remote sensing observations. The model predicts that elemental mercury oxidation is driven largely by bromine chemistry and that particulate mercury is the major form of oxidized mercury. The model predicts that the majority (74%) of oxidized mercury deposited to land-based snow is re-emitted to the atmosphere as gaseous elemental mercury, while a minor fraction (4%) of oxidized mercury that is deposited to sea ice is re-emitted during spring. Our work demonstrates that hourly differences in bromine/ozone chemistry in the atmosphere must be considered to capture the springtime Arctic mercury cycle, including its integration into the cryosphere and ocean. |
format |
Article in Journal/Newspaper |
author |
Ahmed, Shaddy Thomas, Jennie L. Angot, Hélène Dommergue, Aurélien Archer, Stephen D. Bariteau, Ludovic Beck, Ivo Benavent, Nuria Blechschmidt, Anne-Marlene Blomquist, Byron Boyer, Matthew Christensen, Jesper H. Dahlke, Sandro Dastoor, Ashu Helmig, Detlev Howard, Dean Jacobi, Hans-Werner Jokinen, Tuija Lapere, Rémy Laurila, Tiia Quéléver, Lauriane L. J. Richter, Andreas Ryjkov, Andrei Mahajan, Anoop S. Marelle, Louis Pfaffhuber, Katrine Aspmo Posman, Kevin Rinke, Annette Saiz-Lopez, Alfonso Schmale, Julia Skov, Henrik Steffen, Alexandra Stupple, Geoff Stutz, Jochen Travnikov, Oleg Zilker, Bianca |
author_facet |
Ahmed, Shaddy Thomas, Jennie L. Angot, Hélène Dommergue, Aurélien Archer, Stephen D. Bariteau, Ludovic Beck, Ivo Benavent, Nuria Blechschmidt, Anne-Marlene Blomquist, Byron Boyer, Matthew Christensen, Jesper H. Dahlke, Sandro Dastoor, Ashu Helmig, Detlev Howard, Dean Jacobi, Hans-Werner Jokinen, Tuija Lapere, Rémy Laurila, Tiia Quéléver, Lauriane L. J. Richter, Andreas Ryjkov, Andrei Mahajan, Anoop S. Marelle, Louis Pfaffhuber, Katrine Aspmo Posman, Kevin Rinke, Annette Saiz-Lopez, Alfonso Schmale, Julia Skov, Henrik Steffen, Alexandra Stupple, Geoff Stutz, Jochen Travnikov, Oleg Zilker, Bianca |
author_sort |
Ahmed, Shaddy |
title |
Modelling the coupled mercury-halogen-ozone cycle in the central Arctic during spring |
title_short |
Modelling the coupled mercury-halogen-ozone cycle in the central Arctic during spring |
title_full |
Modelling the coupled mercury-halogen-ozone cycle in the central Arctic during spring |
title_fullStr |
Modelling the coupled mercury-halogen-ozone cycle in the central Arctic during spring |
title_full_unstemmed |
Modelling the coupled mercury-halogen-ozone cycle in the central Arctic during spring |
title_sort |
modelling the coupled mercury-halogen-ozone cycle in the central arctic during spring |
publisher |
University of California Press |
publishDate |
2023 |
url |
http://dx.doi.org/10.1525/elementa.2022.00129 https://online.ucpress.edu/elementa/article-pdf/doi/10.1525/elementa.2022.00129/778171/elementa.2022.00129.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
Elem Sci Anth volume 11, issue 1 ISSN 2325-1026 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1525/elementa.2022.00129 |
container_title |
Elem Sci Anth |
container_volume |
11 |
container_issue |
1 |
_version_ |
1784887593645637632 |